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that all refrigerants are
removed safely.
• When transferring refrigerant
into cylinders, ensure that
only appropriate refrigerant
recovery cylinders are
employed. Ensure that the
correct number of cylinders
for holding the total system
charge are available. All
cylinders to be used are
designated for the recovered
refrigerant and labelled for
that refrigerant (i.e. special
cylinders for the recovery of
refrigerant). Cylinders shall be
complete with pressure relief
valve and associated shut-off
valves in good working order.
Empty recovery cylinders are
evacuated and, if possible,
cooled before recovery occurs.
• The recovery equipment shall
be in good working order
with a set of instructions
concerning the equipment
that is at hand and shall be
suitable for the recovery of
flammable refrigerants. In
addition, a set of calibrated
weighing scales shall be
available and in good
working order. Hoses shall
be complete with leakfree
disconnect couplings and
in good condition. Before
using the recovery machine,
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check that it is in satisfactory
working order, has been
properly maintained and that
any associated electrical
components are sealed to
prevent ignition in the event of
a refrigerant release. Consult
manufacturer if in doubt.
• The recovered refrigerant
shall be returned to the
refrigerant supplier in the
correct recovery cylinder, and
the relevant Waste Transfer
Note arranged. Do not mix
refrigerants in recovery units
and especially not in cylinders.
• If compressors or compressor
oils are to be removed,
ensure that they have been
evacuated to an acceptable
level to make certain that
flammable refrigerant does
not remain within the lubricant.
The evacuation process
shall be carried out prior to
returning the compressor to
the suppliers. Only electric
heating to the compressor
body shall be employed to
accelerate this process. When
oil is drained from a system,
it shall be carried out safely.
• Service shall only be
performed as recommended
by the equipment
manufacturer. Maintenance
and repair operations
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12-12-2022 16:08:05
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